Just socks?

Yesterday when I picked Warren up from daycare he had his "back-up" clothes on (not unusual).  Typically, the daycare seals the soiled clothes in a plastic bag and puts them in Warren's cubby for me to take home.  Yesterday, the only thing in the plastic bag were Warren's socks.  Really?  I know I'm over tired most of the time, but surely I did not send my son to school wearing just his socks.  The girl that was working didn't seem to know where his clothes ended up.  I hope they find them, it was the first time he had worn that outfit.